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3 Commits

Author SHA1 Message Date
Alexey Bataev
7b72b658cc [X86] Add option for enabling LEA optimization pass, by Andrey Turetsky 
Add option to enable/disable LEA optimization pass. By default the pass is disabled.
Differential Revision: http://reviews.llvm.org/D15573

llvm-svn: 255881
 2015-12-17 07:34:39 +00:00
Sanjay Patel
f9bdb872bd remove redundant check: optForSize() includes a check for the minsize attribute; NFCI 
llvm-svn: 254925
 2015-12-07 19:13:40 +00:00
Alexey Bataev
7cf324772f LEA code size optimization pass (Part 1): Remove redundant address recalculations, by Andrey Turetsky 
Add new x86 pass which replaces address calculations in load or store instructions with def register of existing LEA (must be in the same basic block), if the LEA calculates address that differs only by a displacement. Works only with -Os or -Oz.
Differential Revision: http://reviews.llvm.org/D13294

llvm-svn: 254712
 2015-12-04 10:53:15 +00:00